Find and compare the best legacy system modernization companies in San Francisco, California. Part of Software Development. All vetted with real client reviews.

AI Digital Product Engineering & Consulting Firm
GeekyAnts is an AI-powered digital product engineering and consulting company helping startups, enterprises, and Fortune 500 brands build scalable, future-ready digital solutions. Since 2006, we have delivered 800+ successful projects for 550+ global clients across healthcare, BFSI, retail, logistics, education, and enterprise technology. We help businesses accelerate digital transformation through strategy, design, engineering, and AI-led innovation. What We Do AI Consulting and Transformation We help organizations adopt and scale AI through Generative AI solutions, AI copilots, intelligent automation, agentic workflows, predictive analytics, RAG implementations, and AI strategy consulting focused on measurable business outcomes. AI-Powered Product Engineering We design, validate, and build scalable digital products — from MVPs to enterprise platforms — with a focus on speed, scalability, performance, and user-centric experiences. Enterprise System Modernization We modernize legacy systems into scalable, cloud-ready architectures through platform modernization, workflow automation, API transformation, DevOps, and infrastructure optimization. Digital Customer Experience We create seamless web and mobile experiences through UI/UX design, application development, accessibility, and performance-focused engineering that improves customer engagement. Our Highlights 800+ successful projects 550+ global clients GeekyAnts has partnered with globally recognized brands including Google, Darden, Olive Garden, SKF, ICICI Securities, Pepperfry, MPL, and WeWork, delivering impactful digital products and enterprise solutions at scale. Beyond client delivery, GeekyAnts is also recognized for its open-source contributions through products such as NativeBase and gluestack-ui, trusted by developers worldwide. With offices across the USA, UK, and India, we bring together strategists, designers, engineers, and AI specialists to solve complex business challenges through technology.
Production-Grade AI & Workflow Systems for Serious Teams
Spiral Scout helps companies turn messy, high-stakes workflows into durable, agent-driven production systems. We step in where internal teams or generic agencies stall — typically at the intersection of automation, data, and AI that must operate inside real business constraints. We don’t sell headcount or ticket delivery. We design and ship working systems that run reliably, scale over time, and stand up to audits. From AI agents and long-running workflow orchestration to CPQ and complex SaaS platforms, we take responsibility from architecture through production readiness — and leave clients with systems they can own and operate independently.
Digital Development and Design Agency with strong AI capabilities
Vincit is a trusted partner for companies like Logitech, Cisco, The New York Times and LTK in developing their digital products and services. With roots in Finland and presence in the US since 2016 we are now over 500 experts ready to serve you. We combine meaningful user experience design to top-tier technical development for mobile, web and cloud. With the use of latest AI tools, we are able to deliver projects more efficiently and help your organization gain AI-Driven-Development capabilities throughout the collaboration. Ask us for free consultation and quote for your project. We are especially interested in challenging projects with established companies.